Optical imaging lens

ABSTRACT

An optical imaging lens may include a first, a second, a third, a fourth and a fifth lens elements positioned in an order from an object side to an image side. Through designing concave and/or convex surfaces of some of the five lens elements, the optical imaging lens may provide improved imaging quality and optical characteristics, increased focal length of the optical imaging lens, improved assembly yield and reduced size of the imaging lens.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to P.R.C. Patent Application No.201910176693.2 titled “Optical Imaging Lens,” filed on Mar. 8, 2019,with the State Intellectual Property Office of the People's Republic ofChina (SIPO).

TECHNICAL FIELD

The present disclosure relates to an optical imaging lens, andparticularly, to an optical imaging lens for a telephoto lens.

BACKGROUND

Technology for portable electronic products improves every day. The keycomponents of the portable electronic products, optical imaging lens,are developed in diversity. Applications are not limited to shootingimages and video, but also the demand for telephoto. The optical imaginglens with the wide-angle lens has an ability to achieve the function ofoptical zoom. The longer of the system focal length of the telephotolens, the higher of the optical zoom ratio.

The system length is increased while the focal length of the opticalimaging lens is increased, such that the distances between the lenselements are increased to reduce the assembly and manufacturing yield.Accordingly, how to increase the focal length of the optical imaginglens while maintaining imaging quality and improving assembly andmanufacturing yield is a subject that needs to be discussed in depth.

SUMMARY

In light of the abovementioned problems, the optical imaging lens havinggood imaging quality, a smaller size, increased system focal length andincreased manufacturing is the point of improvement.

The present disclosure provides an optical imaging lens for capturingimages and videos such as the optical imaging lens of cell phones,cameras, tablets and personal digital assistants. By controlling theconvex or concave shape of the surfaces of lens elements, the size ofthe optical imaging lens may be reduced, the system focal length of theoptical imaging lens may be increased, and the manufacturing may beraised while maintaining good optical characteristics.

In the specification, parameters used herein may include:

Parameter Definition T1 A thickness of the first lens element along theoptical axis G12 A distance from the image-side surface of the firstlens element to the object- side surface of the second lens elementalong the optical axis T2 A thickness of the second lens element alongthe optical axis G23 A distance from the image-side surface of thesecond lens element to the object-side surface of the third lens elementalong the optical axis T3 A thickness of the third lens element alongthe optical axis G34 A distance from the image-side surface of the thirdlens element to the object-side surface of the fourth lens element alongthe optical axis T4 A thickness of the fourth lens element along theoptical axis G45 A distance from the image-side surface of the fourthlens element to the object-side surface of the fifth lens element alongthe optical axis T5 A thickness of the fifth lens element along theoptical axis G5F A distance from the image-side surface of the fifthlens element to the object- side surface of the filtering unit along theoptical axis G56 A distance from the image-side surface of the fifthlens element to the object- side surface of the sixth lens element alongthe optical axis T6 A thickness of the sixth lens element along theoptical axis G6F A distance from the image-side surface of the sixthlens element to the object-side surface of the filtering unit along theoptical axis G67 A distance from the image-side surface of the sixthlens element to the object-side surface of the seventh lens elementalong the optical axis T7 A thickness of the seventh lens element alongthe optical axis G7F A distance from the image-side surface of theseventh lens element to the object-side surface of the filtering unitalong the optical axis G78 A distance from the image-side surface of theseventh lens element to the object-side surface of the eighth lenselement along the optical axis T8 A thickness of the eighth lens elementalong the optical axis G8F A distance from the image-side surface of theeighth lens element to the object-side surface of the filtering unitalong the optical axis TTF A thickness of the filtering unit along theoptical axis GFP A distance from the image-side surface of the filteringunit to the image plane along the optical axis f1 A focal length of thefirst lens element f2 A focal length of the second lens element f3 Afocal length of the third lens element f4 A focal length of the fourthlens element f5 A focal length of the fifth lens element f6 A focallength of the sixth lens element f7 A focal length of the seventh lenselement f8 A focal length of the eighth lens element n1 A refractiveindex of the first lens element n2 A refractive index of the second lenselement n3 A refractive index of the third lens element n4 A refractiveindex of the fourth lens element n5 A refractive index of the fifth lenselement n6 A refractive index of the sixth lens element n7 A refractiveindex of the seventh lens element n8 A refractive index of the eighthlens element V1 An Abbe number of the first lens element V2 An Abbenumber of the second lens element V3 An Abbe number of the third lenselement V4 An Abbe number of the fourth lens element V5 An Abbe numberof the fifth lens element V6 An Abbe number of the sixth lens element V7An Abbe number of the seventh lens element V8 An Abbe number of theeighth lens element HFOV Half Field of View of the optical imaging lensFno F-number of the optical imaging lens EFL An effective focal lengthof the optical imaging lens TTL A distance from the object-side surfaceof the first lens element to the image plane along the optical axis,i.e., the length of the optical imaging lens ALT A sum of thethicknesses of the first lens element, the second lens element, thethird lens element, the fourth lens element, and the fifth along theoptical axis, i.e., a sum of T1, T2, T3, T4 and T5 AAG A sum of the adistance from the image-side surface of the first lens element to theobject-side surface of the second lens element along the optical axis, adistance from the image-side surface of the second lens element to theobject-side surface of the third lens element along the optical axis, adistance from the image-side surface of the third lens element to theobject-side sur- face of the fourth lens element along the optical axis,and a distance from the image-side surface of the fourth lens element tothe object-side surface of the fifth lens element along the opticalaxis, i.e., a sum of G12, G23, G34, G45 BFL A distance from theimage-side surface of the fifth lens element to the image plane alongthe optical axis (A sum of G5F, TTF and GFP) TL A distance from theobject-side surface of the first lens element to the image- side surfaceof the fifth lens element along the optical axis ImgH An image height ofthe optical imaging lens

According to an embodiment of the optical imaging lens of the presentdisclosure, an optical imaging lens may comprise a first lens element, asecond lens element, a third lens element, a fourth lens element, and afifth lens element sequentially from an object side to an image sidealong an optical axis. The first lens element to the fifth lens elementmay each comprise an object-side surface facing toward the object sideand allowing imaging rays to pass through and an image-side surfacefacing toward the image side and allowing the imaging rays to passthrough. The first lens element may be arranged to be a lens element ina first order from the object side to the image side. The second lenselement may be arranged to be a lens element in a second order from theobject side to the image side and may have negative refracting power.The third lens element may be arranged to be a lens element in a thirdorder from the object side to the image side. The fourth lens elementmay be arranged to be a lens element in a fourth order from the objectside to the image side. An optical axis region of the image-side surfaceof the fourth lens element is concave. The fifth lens element may bearranged to be a lens element in a fifth order from the object side tothe image side. The optical imaging lens may satisfy Inequalities:

HFOV/BFL≤4.400°/mm  Inequality (7);

HFOV/TL≤2.500°/mm  Inequality (9); and

TTL/EFL≤0.950  Inequality (10).

According to another embodiment of the optical imaging lens of thepresent disclosure, an optical imaging lens may comprise a first lenselement, a second lens element, a third lens element, a fourth lenselement, and a fifth lens element sequentially from an object side to animage side along an optical axis. The first lens element to the fifthlens element may each comprise an object-side surface facing toward theobject side and allowing imaging rays to pass through and an image-sidesurface facing toward the image side and allowing the imaging rays topass through. The first lens element may be arranged to be a lenselement in a first order from the object side to the image side. Aperiphery region of the image-side surface of the first lens element isconcave. The second lens element may be arranged to be a lens element ina second order from the object side to the image side. The third lenselement may arranged to be a lens element in a third order from theobject side to the image side. The fourth lens element may be arrangedto be a lens element in a fourth order from the object side to the imageside. The fifth lens element may be arranged to be a lens element in afifth order from the object side to the image side. The optical imaginglens may satisfy Inequality (7) and Inequalities:

HFOV/Fno≤4.200°  Inequality (2); and

AAG/T3≤3.500  Inequality (12).

According to another embodiment of the optical imaging lens of thepresent disclosure, an optical imaging lens may comprise a first lenselement, a second lens element, a third lens element, a fourth lenselement, and a fifth lens element sequentially from an object side to animage side along an optical axis. The first lens element to the fifthlens element may each comprise an object-side surface facing toward theobject side and allowing imaging rays to pass through and an image-sidesurface facing toward the image side and allowing the imaging rays topass through. The first lens element may be arranged to be a lenselement in a first order from the object side to the image side. Aperiphery region of the image-side surface of the first lens element isconcave. The second lens element may be arranged to be a lens element ina second order from the object side to the image side. An optical axisregion of the object-side surface of the second lens element is convex.The third lens element may be arranged to be a lens element in a thirdorder from the object side to the image side. The fourth lens elementmay be arranged to be a lens element in a fourth order from the objectside to the image side. The fifth lens element may be arranged to be alens element in a fifth order from the object side to the image side.Lens elements of the optical imaging lens are five or six lens elements.The optical imaging lens may satisfy Inequality (9) and Inequality:

(T2+G23+T3+G34+T4+G45+T5)/(T1+G12)≤2.200  Inequality (3); and

the distance from the image-side surface of the first lens element tothe object-side surface of the second lens element along the opticalaxis is greater than the distance from the image-side surface of thesecond lens element to the object-side surface of the third lens elementalong the optical axis.

In abovementioned three exemplary embodiments, some Inequalities couldbe selectively taken into consideration as follows:

(T2+G23+T3+G34+T4+G45+T5)/G12)≤2.700  Inequality (1);

V1>V2+V5  Inequality (4);

V3>V2+V5  Inequality (5);

V4>V2+V5  Inequality (6);

HFOV/ALT≤3.300°/mm  Inequality (8);

AAG/T1≤2.100  Inequality (11);

(T2+T4+G12+G34)/T1≤3.200  Inequality (13);

(T5+G12+G23+G34)/(T1+T2)≤1.800  Inequality (14);

(T5+G12+G34+G45)/(T1+T4)≤2.200  Inequality (15);

(T2+T4+G12+G34)/T3≤3.600  Inequality (16);

(T2+T4+G23+G34)/T3≤1.480  Inequality (17);

(T2+T4+G34+G45)/T3≤2.200  Inequality (18);

(G12+G23+T5)/(T2+G34)≤3.700  Inequality (19); and

(G12+G45+T5)/(T4+G34)≤3.200  Inequality (20).

In some example embodiments, more details about the convex or concavesurface structure, refracting power or chosen material etc. could beincorporated for one specific lens element or broadly for a plurality oflens elements to improve the control for the system performance and/orresolution. It is noted that the details listed herein could beincorporated into the example embodiments if no inconsistency occurs.

Through controlling the convex or concave shape of the surfaces and atleast one inequality, the optical imaging lens in the exampleembodiments may maintain good imaging quality, the length and the focallength of the optical imaging lens may be effectively shortened, and thefield of view of the optical imaging lens may be extended to achieve lowcost, high assembly and high yield.

BRIEF DESCRIPTION OF THE DRAWINGS

Exemplary embodiments will be more readily understood from the followingdetailed description when read in conjunction with the appendeddrawings, in which:

FIG. 1 depicts a cross-sectional view of one single lens elementaccording to one embodiment of the present disclosure;

FIG. 2 depicts a schematic view of a relation between a surface shapeand an optical focus of a lens element;

FIG. 3 depicts a schematic view of a first example of a surface shapeand an effective radius of a lens element;

FIG. 4 depicts a schematic view of a second example of a surface shapeand an effective radius of a lens element;

FIG. 5 depicts a schematic view of a third example of a surface shapeand an effective radius of a lens element;

FIG. 6 depicts a cross-sectional view of the optical imaging lensaccording to the first embodiment of the present disclosure;

FIG. 7 depicts a chart of a longitudinal spherical aberration and otherkinds of optical aberrations of the optical imaging lens according tothe first embodiment of the present disclosure;

FIG. 8 depicts a table of optical data for each lens element of anoptical imaging lens according to the first embodiment of the presentdisclosure;

FIG. 9 depicts a table of aspherical data of the optical imaging lensaccording to the first embodiment of the present disclosure;

FIG. 10 depicts a cross-sectional view of the optical imaging lensaccording to the second embodiment of the present disclosure;

FIG. 11 depicts a chart of a longitudinal spherical aberration and otherkinds of optical aberrations of the optical imaging lens according tothe second embodiment of the present disclosure;

FIG. 12 depicts a table of optical data for each lens element of theoptical imaging lens according to the second embodiment of the presentdisclosure;

FIG. 13 depicts a table of aspherical data of the optical imaging lensaccording to the second embodiment of the present disclosure;

FIG. 14 depicts a cross-sectional view of the optical imaging lensaccording to the third embodiment of the present disclosure;

FIG. 15 depicts a chart of a longitudinal spherical aberration and otherkinds of optical aberrations the optical imaging lens according to thethird embodiment of the present disclosure;

FIG. 16 depicts a table of optical data for each lens element of theoptical imaging lens according to the third embodiment of the presentdisclosure;

FIG. 17 depicts a table of aspherical data of the optical imaging lensaccording to the third embodiment of the present disclosure;

FIG. 18 depicts a cross-sectional view of the optical imaging lensaccording to the fourth embodiment of the present disclosure;

FIG. 19 depicts a chart of a longitudinal spherical aberration and otherkinds of optical aberrations of the optical imaging lens according tothe fourth embodiment of the present disclosure;

FIG. 20 depicts a table of optical data for each lens element of theoptical imaging lens according to the fourth embodiment of the presentdisclosure;

FIG. 21 depicts a table of aspherical data of the optical imaging lensaccording to the fourth embodiment of the present disclosure;

FIG. 22 depicts a cross-sectional view of the optical imaging lensaccording to the fifth embodiment of the present disclosure;

FIG. 23 depicts a chart of a longitudinal spherical aberration and otherkinds of optical aberrations of the optical imaging lens according tothe fifth embodiment of the present disclosure;

FIG. 24 depicts a table of optical data for each lens element of theoptical imaging lens according to the fifth embodiment of the presentdisclosure;

FIG. 25 depicts a table of aspherical data of the optical imaging lensaccording to the fifth embodiment of the present disclosure;

FIG. 26 depicts a cross-sectional view of the optical imaging lensaccording to the sixth embodiment of the present disclosure;

FIG. 27 depicts a chart of a longitudinal spherical aberration and otherkinds of optical aberrations of the optical imaging lens according tothe sixth embodiment of the present disclosure;

FIG. 28 depicts a table of optical data for each lens element of theoptical imaging lens according to the sixth embodiment of the presentdisclosure;

FIG. 29 depicts a table of aspherical data of the optical imaging lensaccording to the sixth embodiment of the present disclosure;

FIG. 30 depicts a cross-sectional view of the optical imaging lensaccording to the seventh embodiment of the present disclosure;

FIG. 31 depicts a chart of a longitudinal spherical aberration and otherkinds of optical aberrations of the optical imaging lens according tothe seventh embodiment of the present disclosure;

FIG. 32 depicts a table of optical data for each lens element of theoptical imaging lens according to the seventh embodiment of the presentdisclosure;

FIG. 33 depicts a table of aspherical data of the optical imaging lensaccording to the seventh embodiment of the present disclosure;

FIG. 34 depicts a cross-sectional view of the optical imaging lensaccording to the eighth embodiment of the present disclosure;

FIG. 35 depicts a chart of a longitudinal spherical aberration and otherkinds of optical aberrations of the optical imaging lens according tothe eighth embodiment of the present disclosure;

FIG. 36 depicts a table of optical data for each lens element of theoptical imaging lens according to the eighth embodiment of the presentdisclosure;

FIG. 37 depicts a table of aspherical data of the optical imaging lensaccording to the eighth embodiment of the present disclosure;

FIG. 38 depicts a cross-sectional view of the optical imaging lensaccording to the ninth embodiment of the present disclosure;

FIG. 39 depicts a chart of a longitudinal spherical aberration and otherkinds of optical aberrations of the optical imaging lens according tothe ninth embodiment of the present disclosure;

FIG. 40 depicts a table of optical data for each lens element of theoptical imaging lens according to the ninth embodiment of the presentdisclosure;

FIG. 41 depicts a table of aspherical data of the optical imaging lensaccording to the ninth embodiment of the present disclosure;

FIG. 42 depicts a cross-sectional view of the optical imaging lensaccording to the tenth embodiment of the present disclosure;

FIG. 43 depicts a chart of a longitudinal spherical aberration and otherkinds of optical aberrations of the optical imaging lens according tothe tenth embodiment of the present disclosure;

FIG. 44 depicts a table of optical data for each lens element of theoptical imaging lens according to the tenth embodiment of the presentdisclosure;

FIG. 45 depicts a table of aspherical data of the optical imaging lensaccording to the tenth embodiment of the present disclosure;

FIG. 46 depicts a cross-sectional view of the optical imaging lensaccording to the eleventh embodiment of the present disclosure;

FIG. 47 depicts a chart of a longitudinal spherical aberration and otherkinds of optical aberrations of the optical imaging lens according tothe eleventh embodiment of the present disclosure;

FIG. 48 depicts a table of optical data for each lens element of theoptical imaging lens according to the eleventh embodiment of the presentdisclosure;

FIG. 49 depicts a table of aspherical data of the optical imaging lensaccording to the eleventh embodiment of the present disclosure;

FIG. 50A is a table for the values of T1, G12, T2, G23, T3, G34, T4,G45, T5, G5F, TTF, GFP, AAG, ALT, BFL, TL,(T2+G23+T3+G34+T4+G45+T5)/G12, HFOV/Fno,(T2+G23+T3+G34+T4+G45+T5)/(T1+G12), HFOV/BFL, HFOV/ALT, HFOV/TL,TTL/EFL, AAG/T1, AAG/T3, (T2+T4+G12+G34)/T1, (T5+G12+G23+G34)/(T1+T2),(T5+G12+G34+G45)/(T1+T4), (T2+T4+G12+G34)/T3, (T2+T4+G23+G34)/T3,(T2+T4+G34+G45)/T3, (G12+G23+T5)/(T2+G34), (G12+G45+T5)/(T4+G34) asdetermined in the first to fourth embodiments;

FIG. 50B is a table for the values of T1, G12, T2, G23, T3, G34, T4,G45, T5, G5F, TTF, GFP, AAG, ALT, BFL, TL,(T2+G23+T3+G34+T4+G45+T5)/G12, HFOV/Fno,(T2+G23+T3+G34+T4+G45+T5)/(T1+G12), HFOV/BFL, HFOV/ALT, HFOV/TL,TTL/EFL, AAG/T1, AAG/T3, (T2+T4+G12+G34)/T1, (T5+G12+G23+G34)/(T1+T2),(T5+G12+G34+G45)/(T1+T4), (T2+T4+G12+G34)/T3, (T2+T4+G23+G34)/T3,(T2+T4+G34+G45)/T3, (G12+G23+T5)/(T2+G34), (G12+G45+T5)/(T4+G34) asdetermined in the fifth to eighth embodiments; and

FIG. 50C is a table for the values of T1, G12, T2, G23, T3, G34, T4,G45, T5, G5F, G56, T6, G6F, G67, T7, G7F, G78, T8, G8F, TTF, GFP, AAG,ALT, BFL, TL, (T2+G23+T3+G34+T4+G45+T5)/G12, HFOV/Fno,(T2+G23+T3+G34+T4+G45+T5)/(T1+G12), HFOV/BFL, HFOV/ALT, HFOV/TL,TTL/EFL, AAG/T1, AAG/T3, (T2+T4+G12+G34)/T1, (T5+G12+G23+G34)/(T1+T2),(T5+G12+G34+G45)/(T1+T4), (T2+T4+G12+G34)/T3, (T2+T4+G23+G34)/T3,(T2+T4+G34+G45)/T3, (G12+G23+T5)/(T2+G34), (G12+G45+T5)/(T4+G34) asdetermined in the ninth to eleventh embodiments.

DETAILED DESCRIPTION

For a more complete understanding of the present disclosure and itsadvantages, reference is now made to the following description taken inconjunction with the accompanying drawings, in which like referencenumbers indicate like features. Persons having ordinary skill in the artwill understand other varieties for implementing example embodiments,including those described herein. The drawings are not limited tospecific scale and similar reference numbers are used for representingsimilar elements. As used in the disclosures and the appended claims,the terms “example embodiment,” “exemplary embodiment,” and “presentembodiment” do not necessarily refer to a single embodiment, although itmay, and various example embodiments may be readily combined andinterchanged, without departing from the scope or spirit of the presentdisclosure. Furthermore, the terminology as used herein is for thepurpose of describing example embodiments only and is not intended to bea limitation of the disclosure. In this respect, as used herein, theterm “in” may include “in” and “on”, and the terms “a”, “an” and “the”may include singular and plural references. Furthermore, as used herein,the term “by” may also mean “from”, depending on the context.Furthermore, as used herein, the term “if” may also mean “when” or“upon”, depending on the context. Furthermore, as used herein, the words“and/or” may refer to and encompass any and all possible combinations ofone or more of the associated listed items.

In the present disclosure, the optical system may comprise at least onelens element to receive imaging rays that are incident on the opticalsystem over a set of angles ranging from parallel to an optical axis toa half field of view (HFOV) angle with respect to the optical axis. Theimaging rays pass through the optical system to produce an image on animage plane. The term “a lens element having positive refracting power(or negative refracting power)” means that the paraxial refracting powerof the lens element in Gaussian optics is positive (or negative). Theterm “an object-side (or image-side) surface of a lens element” refersto a specific region of that surface of the lens element at whichimaging rays can pass through that specific region. Imaging rays includeat least two types of rays: a chief ray Lc and a marginal ray Lm (asshown in FIG. 1). An object-side (or image-side) surface of a lenselement can be characterized as having several regions, including anoptical axis region, a periphery region, and, in some cases, one or moreintermediate regions, as discussed more fully below.

FIG. 1 is a radial cross-sectional view of a lens element 100. Tworeferential points for the surfaces of the lens element 100 can bedefined: a central point, and a transition point. The central point of asurface of a lens element is a point of intersection of that surface andthe optical axis I. As illustrated in FIG. 1, a first central point CP1may be present on the object-side surface 110 of lens element 100 and asecond central point CP2 may be present on the image-side surface 120 ofthe lens element 100. The transition point is a point on a surface of alens element, at which the line tangent to that point is perpendicularto the optical axis I. The optical boundary OB of a surface of the lenselement is defined as a point at which the radially outermost marginalray Lm passing through the surface of the lens element intersects thesurface of the lens element. All transition points lie between theoptical axis I and the optical boundary OB of the surface of the lenselement. If multiple transition points are present on a single surface,then these transition points are sequentially named along the radialdirection of the surface with reference numerals starting from the firsttransition point. For example, the first transition point, e.g., TP1,(closest to the optical axis I), the second transition point, e.g., TP2,(as shown in FIG. 4), and the Nth transition point (farthest from theoptical axis I).

The region of a surface of the lens element from the central point tothe first transition point TP1 is defined as the optical axis region,which includes the central point. The region located radially outside ofthe farthest Nth transition point from the optical axis I to the opticalboundary OB of the surface of the lens element is defined as theperiphery region. In some embodiments, there may be intermediate regionspresent between the optical axis region and the periphery region, withthe number of intermediate regions depending on the number of thetransition points.

The shape of a region is convex if a collimated ray being parallel tothe optical axis I and passing through the region is bent toward theoptical axis I such that the ray intersects the optical axis I on theimage side A2 of the lens element. The shape of a region is concave ifthe extension line of a collimated ray being parallel to the opticalaxis I and passing through the region intersects the optical axis I onthe object side A1 of the lens element.

Additionally, referring to FIG. 1, the lens element 100 may also have amounting portion 130 extending radially outward from the opticalboundary OB. The mounting portion 130 is typically used to physicallysecure the lens element to a corresponding element of the optical system(not shown). Imaging rays do not reach the mounting portion 130. Thestructure and shape of the mounting portion 130 are only examples toexplain the technologies, and should not be taken as limiting the scopeof the present disclosure. The mounting portion 130 of the lens elementsdiscussed below may be partially or completely omitted in the followingdrawings.

Referring to FIG. 2, optical axis region Z1 is defined between centralpoint CP and first transition point TP1. Periphery region Z2 is definedbetween TP1 and the optical boundary OB of the surface of the lenselement. Collimated ray 211 intersects the optical axis I on the imageside A2 of lens element 200 after passing through optical axis regionZ1, i.e., the focal point of collimated ray 211 after passing throughoptical axis region Z1 is on the image side A2 of the lens element 200at point R in FIG. 2. Accordingly, since the ray itself intersects theoptical axis I on the image side A2 of the lens element 200, opticalaxis region Z1 is convex. On the contrary, collimated ray 212 divergesafter passing through periphery region Z2. The extension line EL ofcollimated ray 212 after passing through periphery region Z2 intersectsthe optical axis I on the object side A1 of lens element 200, i.e., thefocal point of collimated ray 212 after passing through periphery regionZ2 is on the object side A1 at point M in FIG. 2. Accordingly, since theextension line EL of the ray intersects the optical axis I on the objectside A1 of the lens element 200, periphery region Z2 is concave. In thelens element 200 illustrated in FIG. 2, the first transition point TP1is the border of the optical axis region and the periphery region, i.e.,TP1 is the point at which the shape changes from convex to concave.

Alternatively, there is another way for a person having ordinary skillin the art to determine whether an optical axis region is convex orconcave by referring to the sign of “Radius” (the “R” value), which isthe paraxial radius of shape of a lens surface in the optical axisregion. The R value is commonly used in conventional optical designsoftware such as Zemax and CodeV. The R value usually appears in thelens data sheet in the software. For an object-side surface, a positiveR value defines that the optical axis region of the object-side surfaceis convex, and a negative R value defines that the optical axis regionof the object-side surface is concave. Conversely, for an image-sidesurface, a positive R value defines that the optical axis region of theimage-side surface is concave, and a negative R value defines that theoptical axis region of the image-side surface is convex. The resultfound by using this method should be consistent with the methodutilizing intersection of the optical axis by rays/extension linesmentioned above, which determines surface shape by referring to whetherthe focal point of a collimated ray being parallel to the optical axis Iis on the object-side or the image-side of a lens element. As usedherein, the terms “a shape of a region is convex (concave),” “a regionis convex (concave),” and “a convex- (concave-) region,” can be usedalternatively.

FIG. 3, FIG. 4 and FIG. 5 illustrate examples of determining the shapeof lens element regions and the boundaries of regions under variouscircumstances, including the optical axis region, the periphery region,and intermediate regions as set forth in the present specification.

FIG. 3 is a radial cross-sectional view of a lens element 300. Asillustrated in FIG. 3, only one transition point TP1 appears within theoptical boundary OB of the image-side surface 320 of the lens element300. Optical axis region Z1 and periphery region Z2 of the image-sidesurface 320 of lens element 300 are illustrated. The R value of theimage-side surface 320 is positive (i.e., R>0). Accordingly, the opticalaxis region Z1 is concave.

In general, the shape of each region demarcated by the transition pointwill have an opposite shape to the shape of the adjacent region(s).Accordingly, the transition point will define a transition in shape,changing from concave to convex at the transition point or changing fromconvex to concave. In FIG. 3, since the shape of the optical axis regionZ1 is concave, the shape of the periphery region Z2 will be convex asthe shape changes at the transition point TP1.

FIG. 4 is a radial cross-sectional view of a lens element 400. Referringto FIG. 4, a first transition point TP1 and a second transition pointTP2 are present on the object-side surface 410 of lens element 400. Theoptical axis region Z1 of the object-side surface 410 is defined betweenthe optical axis I and the first transition point TP1. The R value ofthe object-side surface 410 is positive (i.e., R>0). Accordingly, theoptical axis region Z1 is convex.

The periphery region Z2 of the object-side surface 410, which is alsoconvex, is defined between the second transition point TP2 and theoptical boundary OB of the object-side surface 410 of the lens element400. Further, intermediate region Z3 of the object-side surface 410,which is concave, is defined between the first transition point TP1 andthe second transition point TP2. Referring once again to FIG. 4, theobject-side surface 410 includes an optical axis region Z1 locatedbetween the optical axis I and the first transition point TP1, anintermediate region Z3 located between the first transition point TP1and the second transition point TP2, and a periphery region Z2 locatedbetween the second transition point TP2 and the optical boundary OB ofthe object-side surface 410. Since the shape of the optical axis regionZ1 is designed to be convex, the shape of the intermediate region Z3 isconcave as the shape of the intermediate region Z3 changes at the firsttransition point TP1, and the shape of the periphery region Z2 is convexas the shape of the periphery region Z2 changes at the second transitionpoint TP2.

FIG. 5 is a radial cross-sectional view of a lens element 500. Lenselement 500 has no transition point on the object-side surface 510 ofthe lens element 500. For a surface of a lens element with no transitionpoint, for example, the object-side surface 510 the lens element 500,the optical axis region Z1 is defined as the region between 0-50% of thedistance between the optical axis I and the optical boundary OB of thesurface of the lens element and the periphery region is defined as theregion between 50%-100% of the distance between the optical axis I andthe optical boundary OB of the surface of the lens element. Referring tolens element 500 illustrated in FIG. 5, the optical axis region Z1 ofthe object-side surface 510 is defined between the optical axis I and50% of the distance between the optical axis I and the optical boundaryOB. The R value of the object-side surface 510 is positive (i.e., R>0).Accordingly, the optical axis region Z1 is convex. For the object-sidesurface 510 of the lens element 500, because there is no transitionpoint, the periphery region Z2 of the object-side surface 510 is alsoconvex. It should be noted that lens element 500 may have a mountingportion (not shown) extending radially outward from the periphery regionZ2.

According to an embodiment of the optical imaging lens of the presentdisclosure, an optical imaging lens may comprise a first lens element, asecond lens element, a third lens element, a fourth lens element and afifth lens element sequentially from an object side to an image sidealong an optical axis. The first lens element to the fifth lens elementmay each comprise an object-side surface facing toward the object sideand allowing imaging rays to pass through and an image-side surfacefacing toward the image side and allowing the imaging rays to passthrough. By designing the following detail features of lens elementsincorporated one another, the length and the focal length of the opticalimaging lens may be effectively shortened, and the field of view of theoptical imaging lens may be effectively extended while maintaining goodoptical characteristics.

In some embodiments of the optical imaging lens of the presentdisclosure, the first lens element is set to be a lens element havingrefracting power in a first order from the object side to the image sideand have positive refracting power; the second lens element is set to bea lens element having refracting power in a second order from the objectside to the image side; the third lens element is set to be a lenselement having refracting power in a third order from the object side tothe image side; the fourth lens element is set to be a lens elementhaving refracting power in a fourth order from the object side to theimage side; the fifth lens element is set to be a lens element havingrefracting power in a fifth order from the object side to the image sideand have positive refracting power; a periphery region of the image-sidesurface of the fifth lens element is set to be convex; the opticalimaging lens is set to be a fixed-focus lens; and the optical imaginglens is set to satisfy the following three combinations, such that thefocal length of the optical imaging lens is increased while the distancebetween the second lens element and the fifth lens element is shortenedto improve the assembly. In addition, the optical imaging lens being afixed-focus lens may be beneficial for maintaining the effective radiusof the second lens element to the fifth lens element to be less than orequal to 2 mm, so as to meet the size of the lens for the portableelectronic device:

-   -   First combination: a periphery region of the image-side surface        of the second lens element is set to be concave and the optical        imaging lens is set to satisfy Inequality (1):        (T2+G23+T3+G34+T4+G45+T5)/G12≤2.700;    -   Second combination: the optical imaging lens is set to satisfy        Inequality (1): (T2+G23+T3+G34+T4+G45+T5)/G12≤2.700 and        Inequality (2): HFOV/Fno 4.200°; and    -   Third combination: the optical imaging lens is set to satisfy        Inequality (2): HFOV/Fno 4.200° and Inequality (3):        (T2+G23+T3+G34+T4+G45+T5)/(T1+G12)≤2.200.

The further restrictions for Inequalities (1), (2) and (3) defined belowmay constitute better configuration:1.200≤(T2+G23+T3+G34+T4+G45+T5)/G12≤2.700, 1.600° HFOV/Fno 4.200° and0.640≤(T2+G23+T3+G34+T4+G45+T5)/(T1+G12)≤2.200.

Moreover, the optical imaging lens satisfying Inequalities (4), (5) and(6), V1>V2+V5, V3>V2+V5 and V4>V2+V5, cooperated with the limitation ofthe surface shape of the lens elements may be beneficial for correctingchromatic aberration of the optical system, and reducing the distancebetween the second lens element and the fifth lens element may bebeneficial for improving the assembly and yield.

In some embodiments of the optical imaging lens of the presentdisclosure, to maintain appropriate values of the thickness of each lenselement and gaps between the lens elements for preventing opticalimaging lens parameters that are too large to allow the length of theoptical imaging lens to be sufficiently shortened, and preventingoptical imaging lens parameters that are too small to interfere withassembly of the optical imaging lens and the difficulty of manufacture.

The further restriction for Inequality (7), HFOV/BFL≤4.4007 mm, definedbelow may constitute better configuration: 0.960°/mm≤HFOV/BFL≤4.400°/mm.

The further restriction for Inequality (8), HFOV/ALT≤3.300°/mm, definedbelow may constitute better configuration: 1.200°/mm≤HFOV/ALT≤3.300°/mm.

The further restriction for Inequality (9), HFOV/TL≤2.500°/mm, definedbelow may constitute better configuration: 0.880°/mm≤HFOV/TL≤2.500°/mm.

The further restriction for Inequality (10), TTL/EFL≤0.950, definedbelow may constitute better configuration: 0.700≤TTL/EFL≤0.950.

The further restriction for Inequality (11), AAG/T1≤2.100, defined belowmay constitute better configuration: 0.800≤AAG/T1≤2.100.

The further restriction for Inequality (12), AAG/T3≤3.500, defined belowmay constitute better configuration: 0.480≤AAG/T3≤3.500.

The further restriction for Inequality (13), (T2+T4+G12+G34)/T1≤3.200,defined below may constitute better configuration:1.120≤(T2+T4+G12+G34)/T1≤3.200.

The further restriction for Inequality (14),(T5+G12+G23+G34)/(T1+T2)≤1.800, defined below may constitute betterconfiguration: 0.760≤(T5+G12+G23+G34)/(T1+T2)≤1.800.

The further restriction for Inequality (15),(T5+G12+G34+G45)/(T1+T4)≤2.200, defined below may constitute betterconfiguration: 0.800≤(T5+G12+G34+G45)/(T1+T4)≤2.200.

The further restriction for Inequality (16), (T2+T4+G12+G34)/T3≤3.600,defined below may constitute better configuration:0.770≤(T2+T4+G12+G34)/T3≤3.600.

The further restriction for Inequality (17), (T2+T4+G23+G34)/T3≤1.480,defined below may constitute better configuration:0.400≤(T2+T4+G23+G34)/T3≤1.480.

The further restriction for Inequality (18), (T2+T4+G34+G45)/T3≤2.200,defined below may constitute better configuration:0.400≤(T2+T4+G34+G45)/T3≤2.200.

The further restriction for Inequality (19),(G12+G23+T5)/(T2+G34)≤3.700, defined below may constitute betterconfiguration: 1.360≤(G12+G23+T5)/(T2+G34)≤3.700.

The further restriction for Inequality (20),(G12+G45+T5)/(T4+G34)≤3.200, defined below may constitute betterconfiguration: 1.680≤(G12+G45+T5)/(T4+G34)≤3.200.

In addition, any combination of the parameters of the embodiment may beselected to increase the optical imaging lens limitation to facilitatethe optical imaging lens design of the same architecture of the presentinvention.

In consideration of the non-predictability of design for the opticalsystem, while the optical imaging lens may satisfy any one ofinequalities described above, the optical imaging lens according to thedisclosure herein may achieve a shortened length and an increaseaperture, improve an imaging quality or assembly yield, and effectivelyimprove drawbacks of a typical optical imaging lens.

The range of values within the maximum and minimum values derived fromthe combined ratios of the optical parameters can be implementedaccording to the following embodiments.

Reference is now made to FIGS. 6-9. FIG. 6 illustrates an examplecross-sectional view of an optical imaging lens 1 according to a firstexample embodiment. FIG. 7 shows example charts of a longitudinalspherical aberration and other kinds of optical aberrations of theoptical imaging lens 1 according to the first example embodiment. FIG. 8illustrates an example table of optical data of each lens element of theoptical imaging lens 1 according to the first example embodiment. FIG. 9depicts an example table of aspherical data of the optical imaging lens1 according to the first example embodiment.

As shown in FIG. 6, the optical imaging lens 1 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise a first lens element L1, an aperture stopSTO, a second lens element L2, a third lens element L3, a fourth lenselement L4 and a fifth lens element L5. A filtering unit TF and an imageplane IMA of an image sensor (not shown) may be positioned at the imageside A2 of the optical imaging lens 1. Each of the first, second, third,fourth and fifth lens elements L1, L2, L3, L4 and L5, and the filteringunit TF may comprise an object-side surfaceL1A1/L2A1/L3A1/L4A1/L5A1/TFA1 facing toward the object side A1 and animage-side surface L1A2/L2A2/L3A2/L4A2/L5A2//TFA2 facing toward theimage side A2. The example embodiment of the illustrated filtering unitTF may be positioned between the fifth lens element L5 and the imageplane IMA. The filtering unit TF may be a filter for preventing lightwith certain wavelength from reaching the mage plane IMA and affectingimaging quality.

Exemplary embodiments of each lens element of the optical imaging lens 1will now be described with reference to the drawings. The lens elementsL1, L2, L3, L4 and L5 of the optical imaging lens 1 may be constructedusing plastic materials in this embodiment.

An example embodiment of the first lens element L1 may have positiverefracting power. Both of the optical axis region L1A1C and theperiphery region L1A1P of the object-side surface L1A1 of the first lenselement L1 may be convex. Both of the optical axis region L1A2C and theperiphery region L1A2P of the image-side surface L1A2 of the first lenselement L1 may be concave.

An example embodiment of the second lens element L2 may have negativerefracting power. Both of the optical axis region L2A1C and theperiphery region L2A1P of the object-side surface L2A1 of the secondlens element L2 may be convex. Both of the optical axis region L2A2C andthe periphery region L2A2P of the image-side surface L2A2 of the secondlens element L2 may be concave.

An example embodiment of the third lens element L3 may have positiverefracting power. Both of the optical axis region L3A1C and theperiphery region L3A1P of the object-side surface L3A1 of the third lenselement L3 may be convex. The optical axis region L3A2C of theimage-side surface L3A2 of the third lens element L3 may be convex. Theperiphery region L3A2P of the image-side surface L3A2 of the third lenselement L3 may be concave.

An example embodiment of the fourth lens element L4 may have negativerefracting power. Both of the optical axis region L4A1C and theperiphery region L4A1P of the object-side surface L4A1 of the fourthlens element L4 may be concave. Both of the optical axis region L4A2Cand the periphery region L4A2P of the image-side surface L4A2 of thefourth lens element L4 may be concave.

An example embodiment of the fifth lens element L5 may have positiverefracting power. Both of the optical axis region L5A1C and theperiphery region L5A1P of the object-side surface L5A1 of the fifth lenselement L5 may be convex. The optical axis region L5A2C of theimage-side surface L5A2 of the fifth lens element L5 may be concave. Theperiphery region L5A2P of the image-side surface L5A2 of the fifth lenselement L5 may be convex.

The aspherical surfaces including the object-side surface L1A1 and theimage-side surface L1A2 of the first lens element L1, the object-sidesurface L2A1 and the image-side surface L2A2 of the second lens elementL2, the object-side surface L3A1 and the image-side surface L3A2 of thethird lens element L3, the object-side surface L4A1 and the image-sidesurface L4A2 of the fourth lens element L4, and the object-side surfaceL5A1 and the image-side surface L5A2 of the fifth lens element L5 mayall be defined by the following aspherical formula (1):

$\begin{matrix}{{Z(Y)} = {{\frac{Y^{2}}{R}/\left( {1 + \sqrt{1 - {\left( {1 + K} \right)\frac{Y^{2}}{R^{2}}}}} \right)} + {\sum_{i = 1}^{n}{a_{2i} \times Y^{2i}}}}} & {{formula}\mspace{14mu}(1)}\end{matrix}$

wherein,

R represents the radius of curvature of the surface of the lens element;

Z represents the depth of the aspherical surface (the perpendiculardistance between the point of the aspherical surface at a distance Yfrom the optical axis and the tangent plane of the vertex on the opticalaxis of the aspherical surface);

Y represents the perpendicular distance between the point of theaspherical surface and the optical axis;

K represents a conic constant; and

a_(2i) represents an aspherical coefficient of 2i^(th) level.

The values of each aspherical parameter are shown in FIG. 9.

FIG. 7(a) shows a longitudinal spherical aberration for threerepresentative wavelengths (470 nm, 555 nm and 650 nm), wherein thevertical axis of FIG. 7(a) defines the field of view. FIG. 7(b) showsthe field curvature aberration in the sagittal direction for threerepresentative wavelengths (470 nm, 555 nm and 650 nm), wherein thevertical axis of FIG. 7(b) defines the image height. FIG. 7(c) shows thefield curvature aberration in the tangential direction for threerepresentative wavelengths (470 nm, 555 nm and 650 nm), wherein thevertical axis of FIG. 7(c) defines the image height. FIG. 7(d) shows avariation of the distortion aberration, wherein the vertical axis ofFIG. 7(d) defines the image height. The three curves with differentwavelengths (470 nm, 555 nm and 650 nm) may represent that off-axislight with respect to these wavelengths may be focused around an imagepoint. From the vertical deviation of each curve shown in FIG. 7(a), theoffset of the off-axis light relative to the image point may be withinabout ±0.03 mm. Therefore, the first embodiment may improve thelongitudinal spherical aberration with respect to different wavelengths.Referring to FIG. 7(b), the focus variation with respect to the threedifferent wavelengths (470 nm, 555 nm and 650 nm) in the whole field mayfall within about ±0.06 mm. Referring to FIG. 7(c), the focus variationwith respect to the three different wavelengths (470 nm, 555 nm and 650nm) in the whole field may fall within about ±0.08 mm. Referring to FIG.7(d), and more specifically the horizontal axis of FIG. 7(d), thevariation of the distortion aberration may be within about ±1%.

As shown in FIG. 8, the distance from the object-side surface L1A1 ofthe first lens element L1 to the image plane IMA along the optical axis(TTL) may be about 11.209 mm, Fno may be about 3.150, HFOV may be about11.864 degrees, the effective focal length (EFL) of the optical imaginglens 1 may be about 11.799 mm, and the image height of the opticalimaging lens 1 may be about 2.502 mm. In accordance with these values,the present embodiment may provide an optical imaging lens 1 having ashortened length for telephoto lens and an increased aperture whileimproving optical performance.

Please refer to FIG. 50A for the values of T1, G12, T2, G23, T3, G34,T4, G45, T5, G5F, TTF, GFP, AAG, ALT, BFL, TL,(T2+G23+T3+G34+T4+G45+T5)/G12, HFOV/Fno,(T2+G23+T3+G34+T4+G45+T5)/(T1+G12), HFOV/BFL, HFOV/ALT, HFOV/TL,TTL/EFL, AAG/T1, AAG/T3, (T2+T4+G12+G34)/T1, (T5+G12+G23+G34)/(T1+T2),(T5+G12+G34+G45)/(T1+T4), (T2+T4+G12+G34)/T3, (T2+T4+G23+G34)/T3,(T2+T4+G34+G45)/T3, (G12+G23+T5)/(T2+G34), and (G12+G45+T5)/(T4+G34) ofthe present embodiment.

Reference is now made to FIGS. 10-13. FIG. 10 illustrates an examplecross-sectional view of an optical imaging lens 2 according to a secondexample embodiment. FIG. 11 shows example charts of a longitudinalspherical aberration and other kinds of optical aberrations of theoptical imaging lens 2 according to the second example embodiment. FIG.12 shows an example table of optical data of each lens element of theoptical imaging lens 2 according to the second example embodiment. FIG.13 shows an example table of aspherical data of the optical imaging lens2 according to the second example embodiment.

As shown in FIG. 10, the optical imaging lens 2 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise a first lens element L1, an aperture stopSTO, a second lens element L2, a third lens element L3, a fourth lenselement L4 and a fifth lens element L5.

The arrangement of the convex or concave surface structures, includingthe object-side surfaces L1A1, L2A1, L3A1, L4A1, and L5A1 and theimage-side surfaces L1A2, L2A2, L4A2, and L5A2 may be generally similarto the optical imaging lens 1, but the differences between the opticalimaging lens 1 and the optical imaging lens 2 may include the concave orconcave surface structures of the image-side surface L3A2, a radius ofcurvature, a thickness, aspherical data, and/or an effective focallength of each lens element. More specifically, the periphery regionL3A2P of the image-side surface L3A2 of the third lens element L3 of theoptical imaging lens 2 may be convex.

Here, in the interest of clearly showing the drawings of the presentembodiment, only the surface shapes which are different from that in thefirst embodiment may be labeled. Please refer to FIG. 12 for the opticalcharacteristics of each lens element in the optical imaging lens 2 ofthe present embodiment.

From the vertical deviation of each curve shown in FIG. 11(a), theoffset of the off-axis light relative to the image point may be withinabout ±0.06 mm. Referring to FIG. 11(b), the focus variation withrespect to the three different wavelengths (470 nm, 555 nm and 650 nm)in the whole field may fall within about ±0.06 mm. Referring to FIG.11(c), the focus variation with respect to the three differentwavelengths (470 nm, 555 nm and 650 nm) in the whole field may fallwithin about +0.08 mm. Referring to FIG. 11(d), the variation of thedistortion aberration of the optical imaging lens 2 may be within about±0.3%.

In comparison with the first embodiment, the distortion aberration inthe second embodiment may be smaller, and system focal length of theoptical imaging lens 2 may be longer as shown in FIG. 11 and FIG. 12.Moreover, the optical imaging lens 2 may be easier to be manufactured,such that yield thereof may be higher.

Please refer to 50A for the values of T1, G12, T2, G23, T3, G34, T4,G45, T5, G5F TTF, GFP, AAG, ALT, BFL, TL, (T2+G23+T3+G34+T4+G45+T5)/G12,HFOV/Fno, (T2+G23+T3+G34+T4+G45+T5)/(T1+G12), HFOV/BFL, HFOV/ALT,HFOV/TL, TTL/EFL, AAG/T1, AAG/T3, (T2+T4+G12+G34)/T1,(T5+G12+G23+G34)/(T1+T2), (T5+G12+G34+G45)/(T1+T4), (T2+T4+G12+G34)/T3,(T2+T4+G23+G34)/T3, (T2+T4+G34+G45)/T3, (G12+G23+T5)/(T2+G34), and(G12+G45+T5)/(T4+G34) of the present embodiment.

Reference is now made to FIGS. 14-17. FIG. 14 illustrates an examplecross-sectional view of an optical imaging lens 3 according to a thirdexample embodiment. FIG. 15 shows example charts of a longitudinalspherical aberration and other kinds of optical aberrations of theoptical imaging lens 3 according to the third example embodiment. FIG.16 shows an example table of optical data of each lens element of theoptical imaging lens 3 according to the third example embodiment. FIG.17 shows an example table of aspherical data of the optical imaging lens3 according to the third example embodiment.

As shown in FIG. 14, the optical imaging lens 3 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise a first lens element L1, an aperture stopSTO, a second lens element L2, a third lens element L3, a fourth lenselement L4 and a fifth lens element L5.

The arrangement of the convex or concave surface structures, includingthe object-side surfaces L1A1, L2A1, L3A1, L4A1, and L5A1 and theimage-side surfaces L1A2, L2A2, L4A2, and L5A2 may be generally similarto the optical imaging lens 1, but the differences between the opticalimaging lens 1 and the optical imaging lens 3 may include the concave orconcave surface structures of the image-side surface L3A2, a radius ofcurvature, a thickness, aspherical data, and/or an effective focallength of each lens element. More specifically, the periphery regionL3A2P of the image-side surface L3A2 of the third lens element L3 of theoptical imaging lens 3 may be convex.

Here, in the interest of clearly showing the drawings of the presentembodiment, only the surface shapes which are different from that in thefirst embodiment may be labeled. Please refer to FIG. 16 for the opticalcharacteristics of each lens element in the optical imaging lens 3 ofthe present embodiment.

From the vertical deviation of each curve shown in FIG. 15(a), theoffset of the off-axis light relative to the image point may be withinabout ±0.06 mm. Referring to FIG. 15(b), the focus variation withrespect to the three different wavelengths (470 nm, 555 nm and 650 nm)in the whole field may fall within about ±0.06 mm. Referring to FIG.15(c), the focus variation with respect to the three differentwavelengths (470 nm, 555 nm and 650 nm) in the whole field may fallwithin about +0.06 mm. Referring to FIG. 15(d), the variation of thedistortion aberration of the optical imaging lens 3 may be within about±0.6%.

In comparison with the first embodiment, the system focal length of theoptical imaging lens 3 may be longer, and the field curvature aberrationin the tangential direction and the distortion aberration of the opticalimaging lens 3 may be smaller as shown in FIG. 15 and FIG. 16. Moreover,the optical imaging lens 3 may be easier to be manufactured, such thatyield thereof may be higher.

Please refer to FIG. 50A for the values of T1, G12, T2, G23, T3, G34,T4, G45, T5, G5F, TTF, GFP, AAG, ALT, BFL, TL,(T2+G23+T3+G34+T4+G45+T5)/G12, HFOV/Fno,(T2+G23+T3+G34+T4+G45+T5)/(T1+G12), HFOV/BFL, HFOV/ALT, HFOV/TL,TTL/EFL, AAG/T1, AAG/T3, (T2+T4+G12+G34)/T1, (T5+G12+G23+G34)/(T1+T2),(T5+G12+G34+G45)/(T1+T4), (T2+T4+G12+G34)/T3, (T2+T4+G23+G34)/T3,(T2+T4+G34+G45)/T3, (G12+G23+T5)/(T2+G34), and (G12+G45+T5)/(T4+G34) ofthe present embodiment.

Reference is now made to FIGS. 18-21. FIG. 18 illustrates an examplecross-sectional view of an optical imaging lens 4 according to a fourthexample embodiment. FIG. 19 shows example charts of a longitudinalspherical aberration and other kinds of optical aberrations of theoptical imaging lens 4 according to the fourth example embodiment. FIG.20 shows an example table of optical data of each lens element of theoptical imaging lens 4 according to the fourth example embodiment. FIG.21 shows an example table of aspherical data of the optical imaging lens4 according to the fourth example embodiment.

As shown in FIG. 18, the optical imaging lens 4 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise a first lens element L1, an aperture stopSTO, a second lens element L2, a third lens element L3, a fourth lenselement L4 and a fifth lens element L5.

The arrangement of the convex or concave surface structures, includingthe object-side surfaces UAL L2A1, L3A1, L4A1, and L5A1 and theimage-side surfaces L1A2, L2A2, L4A2, and L5A2 may be generally similarto the optical imaging lens 1, but the differences between the opticalimaging lens 1 and the optical imaging lens 4 may include the concave orconcave surface structures of the image-side surface L3A2, a radius ofcurvature, a thickness, aspherical data, and/or an effective focallength of each lens element. More specifically, the periphery regionL3A2P of the image-side surface L3A2 of the third lens element L3 of theoptical imaging lens 4 may be convex.

Here, in the interest of clearly showing the drawings of the presentembodiment, only the surface shapes which are different from that in thefirst embodiment may be labeled. Please refer to FIG. 20 for the opticalcharacteristics of each lens element in the optical imaging lens 4 ofthe present embodiment.

From the vertical deviation of each curve shown in FIG. 19(a), theoffset of the off-axis light relative to the image point may be withinabout ±0.08 mm. Referring to FIG. 19(b), the focus variation withrespect to the three different wavelengths (470 nm, 555 nm and 650 nm)in the whole field may fall within about ±0.08 mm. Referring to FIG.19(c), the focus variation with respect to the three differentwavelengths (470 nm, 555 nm and 650 nm) in the whole field may fallwithin about +0.08 mm. Referring to FIG. 19(d), the variation of thedistortion aberration of the optical imaging lens 4 may be within about±0.4%.

In comparison with the first embodiment, the system focal length of theoptical imaging lens 4 may be longer, and the distortion aberration ofthe optical imaging lens 4 may be smaller as shown in FIG. 19 and FIG.20. Moreover, the optical imaging lens 4 may be easier to bemanufactured, such that yield thereof may be higher.

Please refer to FIG. 50A for the values of T1, G12, T2, G23, T3, G34,T4, G45, T5, G5F, TTF, GFP, AAG, ALT, BFL, TL,(T2+G23+T3+G34+T4+G45+T5)/G12, HFOV/Fno,(T2+G23+T3+G34+T4+G45+T5)/(T1+G12), HFOV/BFL, HFOV/ALT, HFOV/TL,TTL/EFL, AAG/T1, AAG/T3, (T2+T4+G12+G34)/T1, (T5+G12+G23+G34)/(T1+T2),(T5+G12+G34+G45)/(T1+T4), (T2+T4+G12+G34)/T3, (T2+T4+G23+G34)/T3,(T2+T4+G34+G45)/T3, (G12+G23+T5)/(T2+G34), and (G12+G45+T5)/(T4+G34) ofthe present embodiment.

Reference is now made to FIGS. 22-25. FIG. 22 illustrates an examplecross-sectional view of an optical imaging lens 5 according to a fifthexample embodiment. FIG. 23 shows example charts of a longitudinalspherical aberration and other kinds of optical aberrations of theoptical imaging lens 5 according to the fifth example embodiment. FIG.24 shows an example table of optical data of each lens element of theoptical imaging lens 5 according to the fifth example embodiment. FIG.25 shows an example table of aspherical data of the optical imaging lens5 according to the fifth example embodiment.

As shown in FIG. 22, the optical imaging lens 5 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise a first lens element L1, an aperture stopSTO, a second lens element L2, a third lens element L3, a fourth lenselement L4 and a fifth lens element L5.

The arrangement of the convex or concave surface structures, includingthe object-side surfaces UAL L2A1, L3A1. L4A1, and L5A1 and theimage-side surfaces L1A2, L2A2, L4A2, and L5A2 may be generally similarto the optical imaging lens 1, but the differences between the opticalimaging lens 1 and the optical imaging lens 5 may include the concave orconcave surface structures of the image-side surface L3A2, a radius ofcurvature, a thickness, aspherical data, and/or an effective focallength of each lens element. More specifically, the periphery regionL3A2P of the image-side surface L3A2 of the third lens element L3 of theoptical imaging lens 5 may be convex.

Here, in the interest of clearly showing the drawings of the presentembodiment, only the surface shapes which are different from that in thefirst embodiment may be labeled. Please refer to FIG. 24 for the opticalcharacteristics of each lens element in the optical imaging lens 5 ofthe present embodiment.

From the vertical deviation of each curve shown in FIG. 23(a), theoffset of the off-axis light relative to the image point may be withinabout ±0.08 mm. Referring to FIG. 23(b), the focus variation withrespect to the three different wavelengths (470 nm, 555 nm and 650 nm)in the whole field may fall within about ±0.08 mm. Referring to FIG.23(c), the focus variation with respect to the three differentwavelengths (470 nm, 555 nm and 650 nm) in the whole field may fallwithin about ±0.08 mm. Referring to FIG. 23(d), the variation of thedistortion aberration of the optical imaging lens 5 may be within about±0.6%.

In comparison with the first embodiment, the system focal length of theoptical imaging lens 5 may be longer, and the distortion aberration ofthe optical imaging lens 5 may be smaller as shown in FIG. 23 and FIG.24. Moreover, the optical imaging lens 5 may be easier to bemanufactured, such that yield thereof may be higher.

Please refer to FIG. 50B for the values of T1, G12, T2, G23, T3, G34,T4, G45, T5, G5F, TTF, GFP, AAG, ALT, BFL, TL,(T2+G23+T3+G34+T4+G45+T5)/G12, HFOV/Fno,(T2+G23+T3+G34+T4+G45+T5)/(T1+G12), HFOV/BFL, HFOV/ALT, HFOV/TL,TTL/EFL, AAG/T1, AAG/T3, (T2+T4+G12+G34)/T1, (T5+G12+G23+G34)/(T1+T2),(T5+G12+G34+G45)/(T1+T4), (T2+T4+G12+G34)/T3, (T2+T4+G23+G34)/T3,(T2+T4+G34+G45)/T3, (G12+G23+T5)/(T2+G34), and (G12+G45+T5)/(T4+G34) ofthe present embodiment.

Reference is now made to FIGS. 26-29. FIG. 26 illustrates an examplecross-sectional view of an optical imaging lens 6 according to a sixthexample embodiment. FIG. 27 shows example charts of a longitudinalspherical aberration and other kinds of optical aberrations of theoptical imaging lens 6 according to the sixth example embodiment. FIG.28 shows an example table of optical data of each lens element of theoptical imaging lens 6 according to the sixth example embodiment. FIG.29 shows an example table of aspherical data of the optical imaging lens6 according to the sixth example embodiment.

As shown in FIG. 26, the optical imaging lens 6 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise a first lens element L1, an aperture stopSTO, a second lens element L2, a third lens element L3, a fourth lenselement L4 and a fifth lens element L5.

The arrangement of the convex or concave surface structures, includingthe object-side surfaces L1A1, L2A1, L3A1, L4A1, and L5A1 and theimage-side surfaces L1A2, L2A2, L3A2, and L4A2 may be generally similarto the optical imaging lens 1, but the differences between the opticalimaging lens 1 and the optical imaging lens 6 may include the concave orconcave surface structures of the image-side surface L5A2, a radius ofcurvature, a thickness, aspherical data, and/or an effective focallength of each lens element. More specifically, the optical axis regionL5A2C of the object-side surface L5A2 of the fifth lens element L5 ofthe optical imaging lens 6 may be convex.

Here, in the interest of clearly showing the drawings of the presentembodiment, only the surface shapes which are different from that in thefirst embodiment may be labeled. Please refer to FIG. 28 for the opticalcharacteristics of each lens element in the optical imaging lens 6 ofthe present embodiment.

From the vertical deviation of each curve shown in FIG. 27(a), theoffset of the off-axis light relative to the image point may be withinabout ±0.12 mm. Referring to FIG. 27(b), the focus variation withrespect to the three different wavelengths (470 nm, 555 nm and 650 nm)in the whole field may fall within about ±0.12 mm. Referring to FIG.27(c), the focus variation with respect to the three differentwavelengths (470 nm, 555 nm and 650 nm) in the whole field may fallwithin about ±0.12 mm. Referring to FIG. 27(d), the variation of thedistortion aberration of the optical imaging lens 6 may be within about±1.2%.

In comparison with the first embodiment, the system focal length of theoptical imaging lens 6 may be longer as shown in FIG. 27 and FIG. 28.Moreover, the optical imaging lens 6 may be easier to be manufactured,such that yield thereof may be higher.

Please refer to FIG. 50B for the values of T1, G12, T2, G23, T3, G34,T4, G45, T5, G5F, TTF, GFP, AAG, ALT, BFL, TL,(T2+G23+T3+G34+T4+G45+T5)/G12, HFOV/Fno,(T2+G23+T3+G34+T4+G45+T5)/(T1+G12), HFOV/BFL, HFOV/ALT, HFOV/TL,TTL/EFL, AAG/T1, AAG/T3, (T2+T4+G12+G34)/T1, (T5+G12+G23+G34)/(T1+T2),(T5+G12+G34+G45)/(T1+T4), (T2+T4+G12+G34)/T3, (T2+T4+G23+G34)/T3,(T2+T4+G34+G45)/T3, (G12+G23+T5)/(T2+G34), and (G12+G45+T5)/(T4+G34) ofthe present embodiment.

Reference is now made to FIGS. 30-33. FIG. 30 illustrates an examplecross-sectional view of an optical imaging lens 7 according to a seventhexample embodiment. FIG. 31 shows example charts of a longitudinalspherical aberration and other kinds of optical aberrations of theoptical imaging lens 7 according to the seventh example embodiment. FIG.32 shows an example table of optical data of each lens element of theoptical imaging lens 7 according to the seventh example embodiment. FIG.33 shows an example table of aspherical data of the optical imaging lens7 according to the seventh example embodiment.

As shown in FIG. 30, the optical imaging lens 7 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise a first lens element L1, an aperture stopSTO, a second lens element L2, a third lens element L3, a fourth lenselement L4 and a fifth lens element L5.

The arrangement of the convex or concave surface structures, includingthe object-side surfaces L1A1, L3A1, and L4A1 and the image-sidesurfaces L1A2, L2A2, and L5A2 may be generally similar to the opticalimaging lens 1, but the differences between the optical imaging lens 1and the optical imaging lens 7 may include the concave or concavesurface structures of the object-side surfaces L2A1 and L5A1, theconcave or concave surface structures of the image-side surfaces L3A2and L4A2, a radius of curvature, a thickness, aspherical data, and/or aneffective focal length of each lens element. More specifically, theoptical axis region L2A1C and the periphery region L2A1P of theobject-side surface L2A1 of the second lens element L2 and the peripheryregion L5A1P of the object-side surface L5A1 of the fifth lens elementL5 of the optical imaging lens 7 may be concave, and the peripheryregion L3A2P of the image-side surface L3A2 of the third lens element L3and the periphery region L4A2P of the image-side surface L4A2 of thefourth lens element L4 may be convex.

Here, in the interest of clearly showing the drawings of the presentembodiment, only the surface shapes which are different from that in thefirst embodiment may be labeled. Please refer to FIG. 32 for the opticalcharacteristics of each lens element in the optical imaging lens 7 ofthe present embodiment.

From the vertical deviation of each curve shown in FIG. 31(a), theoffset of the off-axis light relative to the image point may be withinabout ±0.08 mm. Referring to FIG. 31(b), the focus variation withrespect to the three different wavelengths (470 nm, 555 nm and 650 nm)in the whole field may fall within about ±0.08 mm. Referring to FIG.31(c), the focus variation with respect to the three differentwavelengths (470 nm, 555 nm and 650 nm) in the whole field may fallwithin about ±0.2 mm. Referring to FIG. 31(d), the variation of thedistortion aberration of the optical imaging lens 7 may be within about±0.5%.

In comparison with the first embodiment, the system focal length of theoptical imaging lens 7 may be longer, and the distortion aberration ofthe optical imaging lens 7 may be smaller as shown in FIG. 31 and FIG.32. Moreover, the optical imaging lens 7 may be easier to bemanufactured, such that yield thereof may be higher.

Please refer to FIG. 50B for the values of T1, G12, T2, G23, T3, G34,T4, G45, T5, G5F, TTF, GFP, AAG, ALT, BFL, TL,(T2+G23+T3+G34+T4+G45+T5)/G12, HFOV/Fno,(T2+G23+T3+G34+T4+G45+T5)/(T1+G12), HFOV/BFL, HFOV/ALT, HFOV/TL,TTL/EFL, AAG/T1, AAG/T3, (T2+T4+G12+G34)/T1, (T5+G12+G23+G34)/(T1+T2),(T5+G12+G34+G45)/(T1+T4), (T2+T4+G12+G34)/T3, (T2+T4+G23+G34)/T3,(T2+T4+G34+G45)/T3, (G12+G23+T5)/(T2+G34), and (G12+G45+T5)/(T4+G34) ofthe present embodiment.

Reference is now made to FIGS. 34-37. FIG. 34 illustrates an examplecross-sectional view of an optical imaging lens 8 according to an eighthexample embodiment. FIG. 35 shows example charts of a longitudinalspherical aberration and other kinds of optical aberrations of theoptical imaging lens 8 according to the eighth example embodiment. FIG.36 shows an example table of optical data of each lens element of theoptical imaging lens 8 according to the eighth example embodiment. FIG.37 shows an example table of aspherical data of the optical imaging lens8 according to the eighth example embodiment.

As shown in FIG. 34, the optical imaging lens 8 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise a first lens element L1, an aperture stopSTO, a second lens element L2, a third lens element L3, a fourth lenselement L4 and a fifth lens element L5.

The arrangement of the convex or concave surface structures, includingthe object-side surfaces L1A1, L3A1, L4A1, and L5A1 and the image-sidesurfaces L1A2, L2A2, and L4A2 may be generally similar to the opticalimaging lens 1, but the differences between the optical imaging lens 1and the optical imaging lens 8 may include the concave or concavesurface structures of the object-side surface L2A1, the concave orconcave surface structures of the image-side surfaces L3A2 and L5A2, aradius of curvature, a thickness, aspherical data, and/or an effectivefocal length of each lens element. More specifically, the peripheryregion L2A1P of the object-side surface L2A1 of the second lens elementL2 and the optical axis region L3A2C of the image-side surface L3A2 ofthe third lens element L3 of the optical imaging lens 8 may be concave,and the optical axis region L5A2C of the image-side surface L5A2 of thefifth lens element L5 of the optical imaging lens 8 may be convex.

Here, in the interest of clearly showing the drawings of the presentembodiment, only the surface shapes which are different from that in thefirst embodiment may be labeled. Please refer to FIG. 36 for the opticalcharacteristics of each lens element in the optical imaging lens 8 ofthe present embodiment.

From the vertical deviation of each curve shown in FIG. 35(a), theoffset of the off-axis light relative to the image point may be withinabout ±0.03 mm. Referring to FIG. 35(b), the focus variation withrespect to the three different wavelengths (470 nm, 555 nm and 650 nm)in the whole field may fall within about ±0.03 mm. Referring to FIG.35(c), the focus variation with respect to the three differentwavelengths (470 nm, 555 nm and 650 nm) in the whole field may fallwithin about +0.05 mm. Referring to FIG. 35(d), the variation of thedistortion aberration of the optical imaging lens 8 may be within about±0.8%.

In comparison with the first embodiment, the distortion aberration, andthe field curvature aberration in the sagittal direction and thetangential direction of the optical imaging lens 8 may be smaller, andthe system focal length of the optical imaging lens 8 may be longer asshown in FIG. 35 and FIG. 36. Moreover, the optical imaging lens 8 maybe easier to be manufactured, such that yield thereof may be higher.

Please refer to FIG. 50B for the values of T1, G12, T2, G23, T3, G34,T4, G45, T5, G5F, TTF, GFP, AAG, ALT, BFL, TL,(T2+G23+T3+G34+T4+G45+T5)/G12, HFOV/Fno,(T2+G23+T3+G34+T4+G45+T5)/(T1+G12), HFOV/BFL, HFOV/ALT, HFOV/TL,TTL/EFL, AAG/T1, AAG/T3, (T2+T4+G12+G34)/T1, (T5+G12+G23+G34)/(T1+T2),(T5+G12+G34+G45)/(T1+T4), (T2+T4+G12+G34)/T3, (T2+T4+G23+G34)/T3,(T2+T4+G34+G45)/T3, (G12+G23+T5)/(T2+G34), and (G12+G45+T5)/(T4+G34) ofthe present embodiment.

Reference is now made to FIGS. 38-41. FIG. 38 illustrates an examplecross-sectional view of an optical imaging lens 9 according to a ninthexample embodiment. FIG. 39 shows example charts of a longitudinalspherical aberration and other kinds of optical aberrations of theoptical imaging lens 9 according to the ninth example embodiment. FIG.40 shows an example table of optical data of each lens element of theoptical imaging lens 9 according to the ninth example embodiment. FIG.41 shows an example table of aspherical data of the optical imaging lens9 according to the ninth example embodiment.

As shown in FIG. 38, the optical imaging lens 9 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise a first lens element L1, an aperture stopSTO, a second lens element L2, a third lens element L3, a fourth lenselement L4 and a fifth lens element L5. In comparison with the firstembodiment, the optical imaging lens 9 may further comprise a sixth lenselement L6 disposed between the fifth lens element L5 and the imageplane IMA. The sixth lens element L6 may have positive refracting power.Both of the optical axis region L6A1C and the peripheral region L6A1P ofthe object-side surface L6A1 of the sixth lens element L6 may be convex,and both of the optical axis region L6A2C and the peripheral regionL6A2P of the image-side surface L6A2 of the sixth lens element L6 may beconcave.

The arrangement of the convex or concave surface structures, includingthe object-side surfaces L1A1, L2A1, L3A1, L4A1, and L5A1 and theimage-side surfaces L1A2, L2A2, and L4A2 may be generally similar to theoptical imaging lens 1, but the differences between the optical imaginglens 1 and the optical imaging lens 9 may include the concave or concavesurface structures of the image-side surfaces L3A2 and L5A2, a radius ofcurvature, a thickness, aspherical data, and/or an effective focallength of each lens element. More specifically, the optical axis regionL3A2C of the image-side surface L3A2 of the third lens element L3 of theoptical imaging lens 9 may be concave, and the optical axis region L5A2Cof the image-side surface L5A2 of the fifth lens element L5 of theoptical imaging lens 9 may be convex.

Here, in the interest of clearly showing the drawings of the presentembodiment, only the surface shapes which are different from that in thefirst embodiment may be labeled. Please refer to FIG. 40 for the opticalcharacteristics of each lens element in the optical imaging lens 9 ofthe present embodiment.

From the vertical deviation of each curve shown in FIG. 39(a), theoffset of the off-axis light relative to the image point may be withinabout ±0.03 mm. Referring to FIG. 39(b), the focus variation withrespect to the three different wavelengths (470 nm, 555 nm and 650 nm)in the whole field may fall within about ±0.04 mm. Referring to FIG.39(c), the focus variation with respect to the three differentwavelengths (470 nm, 555 nm and 650 nm) in the whole field may fallwithin about +0.06 mm. Referring to FIG. 39(d), the variation of thedistortion aberration of the optical imaging lens 9 may be within about±0.8%.

In comparison with the first embodiment, the distortion aberration, andthe field curvature aberration in the sagittal direction and thetangential direction of the optical imaging lens 9 may be smaller, andthe system focal length of the optical imaging lens 9 may be larger asshown in FIG. 39 and FIG. 40. Moreover, the optical imaging lens 9 maybe easier to be manufactured, such that yield thereof may be higher.

Please refer to FIG. 50C for the values of T1, G12, T2, G23, T3, G34,T4, G45, T5, G5F, G56, T6, G6F, TTF, GFP, AAG, ALT, BFL, TL,(T2+G23+T3+G34+T4+G45+T5)/G12, HFOV/Fno,(T2+G23+T3+G34+T4+G45+T5)/(T1+G12), HFOV/BFL, HFOV/ALT, HFOV/TL,TTL/EFL, AAG/T1, AAG/T3, (T2+T4+G12+G34)/T1, (T5+G12+G23+G34)/(T1+T2),(T5+G12+G34+G45)/(T1+T4), (T2+T4+G12+G34)/T3, (T2+T4+G23+G34)/T3,(T2+T4+G34+G45)/T3, (G12+G23+T5)/(T2+G34), (G12+G45+T5)/(T4+G34) of thepresent embodiment.

Reference is now made to FIGS. 42-45. FIG. 42 illustrates an examplecross-sectional view of an optical imaging lens 10 according to a tenthexample embodiment. FIG. 43 shows example charts of a longitudinalspherical aberration and other kinds of optical aberrations of theoptical imaging lens 10 according to the tenth example embodiment. FIG.44 shows an example table of optical data of each lens element of theoptical imaging lens 10 according to the tenth example embodiment. FIG.45 shows an example table of aspherical data of the optical imaging lens10 according to the tenth example embodiment.

As shown in FIG. 42, the optical imaging lens 10 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise a first lens element L1, an aperture stopSTO, a second lens element L2, a third lens element L3, a fourth lenselement L4, a fifth lens element L5, and a sixth lens element L6. Incomparison with the ninth embodiment, the optical imaging lens 10 mayfurther comprise a seventh lens element L7 disposed between the sixthlens element L6 and the image plane IMA. The seventh lens element L7 mayhave positive refracting power. The optical axis region L7A1C of theobject-side surface L7A1 of the seventh lens element L7 may be convex,and the peripheral region L7A1P of the object-side surface L7A1 of theseventh lens element L7 may be concave. Both of the optical axis regionL7A2C and the peripheral region L7A2P of the image-side surface L7A2 ofthe seventh lens element L7 may be concave.

The arrangement of the convex or concave surface structures, includingthe object-side surfaces L1A1, L2A1, L3A1, L4A1, L5A1, and L6A1 and theimage-side surfaces L1A2, L2A2, L3A2, L4A2, and L5A2 may be generallysimilar to the optical imaging lens 9, but the differences between theoptical imaging lens 9 and the optical imaging lens 10 may include theconcave or concave surface structures of the image-side surface L6A2, aradius of curvature, a thickness, aspherical data, and/or an effectivefocal length of each lens element. More specifically, the peripheralregion L6A2P of the image-side surface L6A2 of the sixth lens element L6of the optical imaging lens 10 may be convex.

Here, in the interest of clearly showing the drawings of the presentembodiment, only the surface shapes which are different from that in theninth embodiment may be labeled. Please refer to FIG. 44 for the opticalcharacteristics of each lens element in the optical imaging lens 10 ofthe present embodiment.

From the vertical deviation of each curve shown in FIG. 43(a), theoffset of the off-axis light relative to the image point may be withinabout ±0.02 mm. Referring to FIG. 43(b), the focus variation withrespect to the three different wavelengths (470 nm, 555 nm and 650 nm)in the whole field may fall within about ±0.02 mm. Referring to FIG.43(c), the focus variation with respect to the three differentwavelengths (470 nm, 555 nm and 650 nm) in the whole field may fallwithin about +0.03 mm. Referring to FIG. 43(d), the variation of thedistortion aberration of the optical imaging lens 10 may be within about±0.5%.

In comparison with the ninth embodiment, the distortion aberration, andthe field curvature aberration in the sagittal direction and thetangential direction of the optical imaging lens 10 may be smaller, andthe system focal length of the optical imaging lens 10 as shown in FIG.43 and FIG. 44. Moreover, the optical imaging lens 10 may be easier tobe manufactured, such that yield thereof may be higher.

Please refer to FIG. 50C for the values of T1, G12, T2, G23, T3, G34,T4, G45, T5, G5F, G56, T6, G6F, G67, T7, G7F, TTF, GFP, AAG, ALT, BFL,TL, (T2+G23+T3+G34+T4+G45+T5)/G12, HFOV/Fno,(T2+G23+T3+G34+T4+G45+T5)/(T1+G12), HFOV/BFL, HFOV/ALT, HFOV/TL,TTL/EFL, AAG/T1, AAG/T3, (T2+T4+G12+G34)/T1, (T5+G12+G23+G34)/(T1+T2),(T5+G12+G34+G45)/(T1+T4), (T2+T4+G12+G34)/T3, (T2+T4+G23+G34)/T3,(T2+T4+G34+G45)/T3, (G12+G23+T5)/(T2+G34), (G12+G45+T5)/(T4+G34) of thepresent embodiment.

Reference is now made to FIGS. 46-49. FIG. 46 illustrates an examplecross-sectional view of an optical imaging lens 11 according to aneleventh example embodiment. FIG. 47 shows example charts of alongitudinal spherical aberration and other kinds of optical aberrationsof the optical imaging lens 11 according to the eleventh exampleembodiment. FIG. 48 shows an example table of optical data of each lenselement of the optical imaging lens 11 according to the eleventh exampleembodiment. FIG. 49 shows an example table of aspherical data of theoptical imaging lens 11 according to the eleventh example embodiment.

As shown in FIG. 46, the optical imaging lens 11 of the presentembodiment, in an order from an object side A1 to an image side A2 alongan optical axis, may comprise a first lens element L1, an aperture stopSTO, a second lens element L2, a third lens element L3, a fourth lenselement L4, a fifth lens element L5, a sixth lens element L6 and aseventh lens element L7. In comparison with the tenth embodiment, theoptical imaging lens 11 may further comprise a eighth lens element L8disposed between the seventh lens element L7 and the image plane IMA.The eighth lens element L8 may have positive refracting power. Both ofthe optical axis region L8A1C and the peripheral region L8A1P of theobject-side surface L8A1 of the eighth lens element L8 may be convex.Both of the optical axis region L8A2C and the peripheral region L8A2P ofthe image-side surface L8A2 of the eighth lens element L8 may beconcave.

The arrangement of the convex or concave surface structures, includingthe object-side surfaces L1A1, L2A1, L3A1, L4A1, L5A1, and L6A1 and theimage-side surfaces L1A2, L2A2, L3A2, L4A2, and L7A2 may be generallysimilar to the optical imaging lens 10, but the differences between theoptical imaging lens 10 and the optical imaging lens 11 may include therefracting power of the seventh lens element L7, the concave or concavesurface structures of the object-side surface L7A1, the concave orconcave surface structures of the image-side surfaces L5A2 and L6A2, aradius of curvature, a thickness, aspherical data, and/or an effectivefocal length of each lens element. More specifically, the optical axisregion L5A2C of the image-side surface L5A2 of the fifth lens element L5and the peripheral region L6A2P of the image-side surface L6A2 of thesixth lens element L6 of the optical imaging lens 11 may be concave, theperipheral region L7A1P of the object-side surface L7A1 of the seventhlens element L7 may be convex, and the seventh lens element L7 may havenegative refracting power.

Here, in the interest of clearly showing the drawings of the presentembodiment, only the surface shapes which are different from that in thetenth embodiment may be labeled. Please refer to FIG. 48 for the opticalcharacteristics of each lens element in the optical imaging lens 11 ofthe present embodiment.

From the vertical deviation of each curve shown in FIG. 47(a), theoffset of the off-axis light relative to the image point may be withinabout ±0.05 mm. Referring to FIG. 47 (b), the focus variation withrespect to the three different wavelengths (470 nm, 555 nm and 650 nm)in the whole field may fall within about ±0.06 mm. Referring to FIG. 47(c), the focus variation with respect to the three different wavelengths(470 nm, 555 nm and 650 nm) in the whole field may fall within about±0.08 mm. Referring to FIG. 47 (d), the variation of the distortionaberration of the optical imaging lens 11 may be within about ±1%.

In comparison with the tenth embodiment, the optical imaging lens 11 maybe easier to be manufactured, such that yield thereof may be higher asshown in FIG. 47 and FIG. 48.

Please refer to FIG. 50C for the values of T1, G12, T2, G23, T3, G34,T4, G45, T5, G5F, G56, T6, G6F, G67, T7, G7F, G78, T8, G8F, TTF, GFP,AAG, ALT, BFL, TL, (T2+G23+T3+G34+T4+G45+T5)/G12, HFOV/Fno,(T2+G23+T3+G34+T4+G45+T5)/(T1+G12), HFOV/BFL, HFOV/ALT, HFOV/TL,TTL/EFL, AAG/T1, AAG/T3, (T2+T4+G12+G34)/T1, (T5+G12+G23+G34)/(T1+T2),(T5+G12+G34+G45)/(T1+T4), (T2+T4+G12+G34)/T3, (T2+T4+G23+G34)/T3,(T2+T4+G34+G45)/T3, (G12+G23+T5)/(T2+G34), and (G12+G45+T5)/(T4+G34) ofthe present embodiment.

FIGS. 50A, 50B and 50C show the values of optical parameters of allembodiments, and it may be clear that the optical imaging lens of anyone of the eleven embodiments may satisfy the Inequalities (1)-(20).

According to above disclosure, the longitudinal spherical aberration,the field curvature aberration and the variation of the distortionaberration of each embodiment may meet the use requirements of variouselectronic products which implement an optical imaging lens. Moreover,the off-axis light with respect to 470 nm, 555 nm and 650 nm wavelengthsmay be focused around an image point, and the offset of the off-axislight for each curve relative to the image point may be controlled toeffectively inhibit the longitudinal spherical aberration, the fieldcurvature aberration and/or the variation of the distortion aberration.Further, as shown by the imaging quality data provided for eachembodiment, the distance between the 470 nm, 555 nm and 650 nmwavelengths may indicate that focusing ability and inhibiting abilityfor dispersion may be provided for different wavelengths.

While various embodiments in accordance with the disclosed principlesare described above, it should be understood that they are presented byway of example only, and are not limiting. Thus, the breadth and scopeof exemplary embodiment(s) should not be limited by any of theabove-described embodiments, but should be defined only in accordancewith the claims and their equivalents issuing from this disclosure.Furthermore, the above advantages and features are provided in describedembodiments, but shall not limit the application of such issued claimsto processes and structures accomplishing any or all of the aboveadvantages.

Additionally, the section headings herein are provided for consistencywith the suggestions under 37 C.F.R. 1.77 or otherwise to provideorganizational cues. These headings shall not limit or characterize theinvention(s) set out in any claims that may issue from this disclosure.Specifically, a description of a technology in the “Background” is notto be construed as an admission that technology is prior art to anyinvention(s) in this disclosure. Furthermore, any reference in thisdisclosure to “invention” in the singular should not be used to arguethat there is only a single point of novelty in this disclosure.Multiple inventions may be set forth according to the limitations of themultiple claims issuing from this disclosure, and such claimsaccordingly define the invention(s), and their equivalents, that areprotected thereby. In all instances, the scope of such claims shall beconsidered on their own merits in light of this disclosure, but shouldnot be constrained by the headings herein.

What is claimed is:
 1. An optical imaging lens comprising a first lenselement, a second lens element, a third lens element, a fourth lenselement and a fifth lens element sequentially from an object side to animage side along an optical axis, each of the first, second, thirdfourth and fifth lens elements having an object-side surface facingtoward the object side and allowing imaging rays to pass through as wellas an image-side surface facing toward the image side and allowing theimaging rays to pass through, wherein: the first lens element isarranged to be a lens element in a first order from the object side tothe image side; the second lens element is arranged to be a lens elementin a second order from the object side to the image side and hasnegative refracting power; the third lens element is arranged to be alens element in a third order from the object side to the image side;the fourth lens element is arranged to be a lens element in a fourthorder from the object side to the image side; an optical axis region ofthe image-side surface of the fourth lens element is concave; the fifthlens element is arranged to be a lens element in a fifth order from theobject side to the image side; and a half field of view of the opticalimaging lens is represented by HFOV, a distance from the image-sidesurface of the fifth lens element to an image plane along the opticalaxis is represented by BFL, a distance from the object-side surface ofthe first lens element to the image-side surface of the fifth lenselement along the optical axis is represented by TL, a distance from theobject-side surface of the first lens element to the image plane alongthe optical axis is represented by TTL, an effective focal length of theoptical imaging lens is represented by EFL, and the optical imaging lenssatisfies inequalities: HFOV/BFL≤4.400°/mm, HFOV/TL≤2.500°/mm andTTL/EFL≤0.950.
 2. The optical imaging lens according to claim 1, whereina distance from the image-side surface of the first lens element to theobject-side surface of the second lens element along the optical axis isgreater than a distance from the image-side surface of the third lenselement to the object-side surface of the fourth lens element along theoptical axis.
 3. The optical imaging lens according to claim 1, whereina F-number of the optical imaging lens is represented by Fno, and theoptical imaging lens further satisfies an inequality: HFOV/Fno≤4.200°.4. The optical imaging lens according to claim 1, wherein a thickness ofthe fifth lens element along the optical axis is represented by T5, adistance from the image-side surface of the first lens element to theobject-side surface of the second lens element along the optical axis isrepresented by G12, a distance from the image-side surface of the thirdlens element to the object-side surface of the fourth lens element alongthe optical axis is represented by G34, a distance from the image-sidesurface of the fourth lens element to the object-side surface of thefifth lens element along the optical axis is represented by G45, athickness of the first lens element along the optical axis isrepresented by T1, a thickness of the fourth lens element along theoptical axis is represented by T4, and the optical imaging lens furthersatisfies an inequality: (T5+G12+G34+G45)/(T1+T4)≤2.200.
 5. The opticalimaging lens according to claim 1, wherein a thickness of the secondlens element along the optical axis is represented by T2, a thickness ofthe fourth lens element along the optical axis is represented by T4, adistance from the image-side surface of the first lens element to theobject-side surface of the second lens element along the optical axis isrepresented by G12, a distance from the image-side surface of the thirdlens element to the object-side surface of the fourth lens element alongthe optical axis is represented by G34, a thickness of the first lenselement along the optical axis is represented by T1, and the opticalimaging lens further satisfies an inequality: (T2+T4+G12+G34)/T1≤3.200.6. The optical imaging lens according to claim 1, wherein a sum of thethicknesses of five lens elements from the first lens element to thefifth lens element along the optical axis is represented by ALT, and theoptical imaging lens further satisfies an inequality:HFOV/ALT≤3.300°/mm.
 7. The optical imaging lens according to claim 1,wherein a sum of four air gaps from the first lens element to the fifthlens element along the optical axis is represented by AAG, a thicknessof the third lens element along the optical axis is represented by T3,and the optical imaging lens further satisfies an inequality:AAG/T3≤3.500.
 8. An optical imaging lens comprising a first lenselement, a second lens element, a third lens element, a fourth lenselement and a fifth lens element sequentially from an object side to animage side along an optical axis, each of the first, second, thirdfourth and fifth lens elements having an object-side surface facingtoward the object side and allowing imaging rays to pass through as wellas an image-side surface facing toward the image side and allowing theimaging rays to pass through, wherein: the first lens element isarranged to be a lens element in a first order from the object side tothe image side; a periphery region of the image-side surface of thefirst lens element is concave; the second lens element is arranged to bea lens element in a second order from the object side to the image side;the third lens element is arranged to be a lens element in a third orderfrom the object side to the image side; the fourth lens element isarranged to be a lens element in a fourth order from the object side tothe image side; the fifth lens element is arranged to be a lens elementin a fifth order from the object side to the image side; and a halffield of view of the optical imaging lens is represented by HFOV, adistance from the image-side surface of the fifth lens element to animage plane along the optical axis is represented by BFL, a F-number ofthe optical imaging lens is represented by Fno, a sum of four air gapsfrom the first lens element to the fifth lens element along the opticalaxis is represented by AAG, a thickness of the third lens element alongthe optical axis is represented by T3, and the optical imaging lenssatisfies inequalities: HFOV/BFL≤4.400°/mm, HFOV/Fno≤4.200° andAAG/T3≤3.500.
 9. The optical imaging lens according to claim 8, whereinthe thickness of the third lens element along the optical axis isgreater than a thickness of the fifth lens element along the opticalaxis.
 10. The optical imaging lens according to claim 8, wherein adistance from the object-side surface of the first lens element to theimage-side surface of the fifth lens element along the optical axis isrepresented by TL, and the optical imaging lens further satisfies aninequality: HFOV/TL≤2.500°/mm.
 11. The optical imaging lens according toclaim 8, wherein a thickness of the second lens element along theoptical axis is represented by T2, a distance from the image-sidesurface of the second lens element to the object-side surface of thethird lens element along the optical axis is represented by G23, adistance from the image-side surface of the third lens element to theobject-side surface of the fourth lens element along the optical axis isrepresented by G34, a thickness of the fourth lens element along theoptical axis is represented by T4, a distance from the image-sidesurface of the fourth lens element to the object-side surface of thefifth lens element along the optical axis is represented by G45, athickness of the fifth lens element along the optical axis isrepresented by T5, a thickness of the first lens element along theoptical axis is represented by T1, a distance from the image-sidesurface of the first lens element to the object-side surface of thesecond lens element along the optical axis is represented by G12, andthe optical imaging lens further satisfies an inequality:(T2+G23+T3+G34+T4+G45+T5)/(T1+G12)≤2.200.
 12. The optical imaging lensaccording to claim 8, wherein a distance from the image-side surface ofthe first lens element to the object-side surface of the second lenselement along the optical axis is represented by G12, a distance fromthe image-side surface of the second lens element to the object-sidesurface of the third lens element along the optical axis is representedby G23, a thickness of the fifth lens element along the optical axis isrepresented by T5, a thickness of the second lens element along theoptical axis is represented by T2, a distance from the image-sidesurface of the third lens element to the object-side surface of thefourth lens element along the optical axis is represented by G34, andthe optical imaging lens further satisfies an inequality:(G12+G23+T5)/(T2+G34)≤3.700.
 13. The optical imaging lens according toclaim 8, wherein a distance from the object-side surface of the firstlens element to the image plane along the optical axis is represented byTTL, an effective focal length of the optical imaging lens isrepresented by EFL, and the optical imaging lens further satisfies aninequality: TTL/EFL≤0.950.
 14. The optical imaging lens according toclaim 8, wherein a thickness of the first lens element along the opticalaxis is represented by T1, and the optical imaging lens furthersatisfies an inequality: AAG/T1≤2.100.
 15. An optical imaging lenscomprising a first lens element, a second lens element, a third lenselement, a fourth lens element and a fifth lens element sequentiallyfrom an object side to an image side along an optical axis, each of thefirst, second, third fourth and fifth lens elements having anobject-side surface facing toward the object side and allowing imagingrays to pass through as well as an image-side surface facing toward theimage side and allowing the imaging rays to pass through, wherein: thefirst lens element is arranged to be a lens element in a first orderfrom the object side to the image side; a periphery region of theimage-side surface of the first lens element is concave; the second lenselement is arranged to be a lens element in a second order from theobject side to the image side; an optical axis region of the object-sidesurface of the second lens element is convex; the third lens element isarranged to be a lens element in a third order from the object side tothe image side; the fourth lens element is arranged to be a lens elementin a fourth order from the object side to the image side; the fifth lenselement is arranged to be a lens element in a fifth order from theobject side to the image side; lens elements of the optical imaging lensare five or six lens elements; and a half field of view of the opticalimaging lens is represented by HFOV, a distance from the object-sidesurface of the first lens element to the image-side surface of the fifthlens element along the optical axis is represented by TL, a thickness ofthe second lens element along the optical axis is represented by T2, adistance from the image-side surface of the second lens element to theobject-side surface of the third lens element along the optical axis isrepresented by G23, a thickness of the third lens element along theoptical axis is represented by T3, a distance from the image-sidesurface of the third lens element to the object-side surface of thefourth lens element along the optical axis is represented by G34, athickness of the fourth lens element along the optical axis isrepresented by T4, a distance from the image-side surface of the fourthlens element to the object-side surface of the fifth lens element alongthe optical axis is represented by G45, a thickness of the fifth lenselement along the optical axis is represented by T5, a thickness of thefirst lens element along the optical axis is represented by T1, adistance from the image-side surface of the first lens element to theobject-side surface of the second lens element along the optical axis isrepresented by G12, and the optical imaging lens satisfies inequalities:(T2+G23+T3+G34+T4+G45+T5)/(T1+G12)≤2.200 and HFOV/TL≤2.500°/mm; and thedistance from the image-side surface of the first lens element to theobject-side surface of the second lens element along the optical axis isgreater than the distance from the image-side surface of the second lenselement to the object-side surface of the third lens element along theoptical axis.
 16. The optical imaging lens according to claim 15,wherein the thickness of the third lens element along the optical axisis greater than the thickness of the second lens element along theoptical axis.
 17. The optical imaging lens according to claim 15,wherein a distance from the image-side surface of the fifth lens elementto an image plane along the optical axis is represented by BFL, and theoptical imaging lens further satisfies an inequality:HFOV/BFL≤4.400°/mm.
 18. The optical imaging lens according to claim 15,wherein the optical imaging lens further satisfies an inequality:(T5+G12+G23+G34)/(T1+T2)≤1.800.
 19. The optical imaging lens accordingto claim 15, wherein the optical imaging lens further satisfies aninequality: (T2+T4+G12+G34)/T3≤3.600.
 20. The optical imaging lensaccording to claim 15, wherein the optical imaging lens furthersatisfies an inequality: (G12+G45+T5)/(T4+G34)≤3.200.